Tesi sul tema "Forests and forestry – algeria"
Segui questo link per vedere altri tipi di pubblicazioni sul tema: Forests and forestry – algeria.
Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili
Vedi i top-50 saggi (tesi di laurea o di dottorato) per l'attività di ricerca sul tema "Forests and forestry – algeria".
Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.
Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.
Vedi le tesi di molte aree scientifiche e compila una bibliografia corretta.
1
Camagni, Francesca <1984>. "q-Hook length formulas for colored labeled forests". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7026/1/Camagni_Francesca_tesi.pdf.
Testo completoAbstract (sommario):
The major index has been deeply studied from the early 1900s and recently has been generalized in different directions, such as the case of labeled forests and colored permutations.
In this thesis we define new types of labelings for forests in which the labels are colored integers. We extend the definition of the flag-major index for these labelings and we present an analogue of well known major index hook length formulas. Finally, this study (which has just apparently a simple combinatoric nature) allows us to show a notion of duality for two particular families of groups obtained from the product G(r,n)×G(r,m).
2
Camagni, Francesca <1984>. "q-Hook length formulas for colored labeled forests". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7026/.
Testo completoAbstract (sommario):
The major index has been deeply studied from the early 1900s and recently has been generalized in different directions, such as the case of labeled forests and colored permutations.
In this thesis we define new types of labelings for forests in which the labels are colored integers. We extend the definition of the flag-major index for these labelings and we present an analogue of well known major index hook length formulas. Finally, this study (which has just apparently a simple combinatoric nature) allows us to show a notion of duality for two particular families of groups obtained from the product G(r,n)×G(r,m).
3
Zhu, Pengyu Zhang Yaoqi. "Demand for urban forests a national and regional study /". Auburn, Ala., 2006. http://hdl.handle.net/10415/1325.
Testo completo
4
Peach, Kris Elizabeth. "Accounting for forests". Thesis, Queensland University of Technology, 1994. https://eprints.qut.edu.au/36390/1/36390_Peach_1994.pdf.
Testo completoAbstract (sommario):
There is a lack of accounting guidance in Australia relating to accounting for forests. Forest accounting provides some unique challenges which existing historical cost based accounting methods do not address. Forests have a significant growth period with revenue being received many years after the majority of expenditure is incurred. They are also assets which appreciate in value from growth. Existing accounting practices in Australia are diverse. Consequently this raises the issue of whether comparability of entities within the industry is possible.
The purpose of this thesis is to examine existing forest accounting
practice in Australia and to recommend an accounting method to assist in improving comparability between entities and in providing users with more meaningful information on which to base decisions regarding the allocation of scarce resources. The recommended accounting method depends upon the merchantable
status of the forest. The accounting method which best enables measurement of entity performance and accounting for appreciation in value of forest assets is the current valuation method. This method requires annual revaluations of the forest. However, the valuation
must be capable of reliable determination and verification to enable
recognition in the balance sheet. The current valuation method is recommended for forests of merchantable age.
Forests of less than merchantable age are difficult to value accurately because of the uncertainty regarding major assumptions such as physical growth, rotation age, and stumpage prices. The recommended method of accounting for immature forests is the cost compounding method. This method records the forest asset at historical cost, compounded by a factor representing the opportunity
cost of capital to allow for the forest growth. Until the forest reaches merchantable age, the increment in
valuation should be recorded in an asset revaluation reserve as the gains are not capable of realisation and it is not consistent with current accounting practice to recognise changes in valuation where the product is not in a readily realisable form. The recommended method of recognising the changes in valuation for a forest of merchantable age is direct recognition in the profit and
loss account. Income from timber sales should be off set against the value of the forest asset, as it does not represent revenue but a direct exchange of assets which involves no profit factor. When a forest has not yet reached merchantable age, and the cost compounding method is applicable, the recommended method of revenue
recognition is to take the change in valuation to an asset
revaluation reserve. Until the timber reaches a merchantable age, the gains are not capable of realisation and it is not consistent with current accounting practice to recognise changes in valuation
where the product is not in a readily realisable form.
Growing timber should be classified as inventory where the timber is held for the purpose of sale in the ordinary course of business. Where the forest is held for sale rather than the timber within the forest, the forest should be classified as an investment. The recommended disclosures in relation to accounting for forests
include disclosure of: revenue· recognition method;
asset measurement method; treatment of expenditure;
treatment of interest; definition of merchantable age; valuation methodology, including specie of timber, age profile of the forest, discount rate and other major assumptions; and insurance cover.
Whilst the recommendations appear a departure from existing, accounting conventions, the majority of the industry are already obtaining current valuations on a regular basis, and precedents have been established for the recognition of the changes in valuation to be recorded directly in the profit and loss account with AAS 25: Financial Reporting by Superannuation Plans and AASB 1023: Financial Reporting by General Insurance Activities. The recommended method of accounting does not contravene existing accounting standards as forests are excluded from the operations of AASB 1010: Revaluation of Non-Current Assets and AASB 1019: of Inventories in the Context of Measurement and Presentation the Historical Cost System.
5
Larson, Chad J. "Modeling forest transition pathways for decision making in private forestry". Diss., Columbia, Mo. : University of Missouri-Columbia, 2004. http://hdl.handle.net/10355/4105.
Testo completoAbstract (sommario):
Thesis (M.S.) University of Missouri-Columbia, 2004.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (June 30, 2006). Vita. Includes bibliographical references.
6
Lele, Dorothy Carleton University Dissertation International Affairs. "Common resource development: community forestry in Maharashtra, India". Ottawa, 1988.
Cerca il testo completo
7
Thrower, James S. "Model-dependent sampling for timber value in old-growth forests of coastal British Columbia". Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/31308.
Testo completoAbstract (sommario):
The procedure used to sample crown timber before harvesting in B.C. is designed to estimate net volume per ha using systematically located angle-count plots where trees are selected with probability proportional to basal area. The primary purpose of the sample is to provide information for timber valuation and stumpage appraisal. Timber value is the most important population parameter for stumpage calculation, but it is not explicitly considered in the sampling design. The objective of this study was to modify the current sampling method to increase the efficiency for estimating value using model-dependent sampling theory.
Eighteen model-dependent sampling strategies were developed from six subsampling methods using three estimators. The six subsampling methods were used to select trees from angle-count plots to estimate the relationship between cruiser-called and estimated tree value. Three subsampling methods used probability-based selection of trees and three methods used purposive-based selection of trees. Ratio, average ratio, and regression estimators were used with each method. The 18 strategies were tested using Monte Carlo simulation with 2000 samples at each of nine sample sizes in three test populations. The test populations were created by grouping angle-count plot data into mutually exclusive sets reflecting different stand characteristics. The sample sizes were n = 20,40, and 60 plots with m = n, 3n, and 5n subsampled trees. Individual tree value was estimated with regression equations that used variables closely related to the value of each species. The sampling strategies were evaluated for bias, sample variance, achieved subsample size, sampling cost, confidence interval coverage, and relative advantage against the current sampling method.
The model-dependent subsampling methods using purposive selection of trees were more efficient than the current sampling method considering cost and variance. The purposive-based methods were biased up to about 5%; the probability-based methods were slightly less biased. The two most efficient methods were: i) purposive selection of trees with the highest estimated values in a plot; and ii) purposive selection of trees with estimated values within a given range to give a second-stage sample balanced on the auxiliary variable. The greatest efficiency was always achieved with one sample tree per plot. The current sampling method was unbiased for estimating value but required approximately twice as many plots to estimate value to the same level of precision as net volume.Forestry, Faculty of
Graduate
8
Li, Yaoxiang. "Modeling operational forestry problems in central Appalachian hardwood forests". Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3814.
Testo completoAbstract (sommario):
Thesis (Ph. D.)--West Virginia University, 2005Title from document title page. Document formatted into pages; contains ix, 144 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 107-114).
9
Liu, Shan. "Estimating the Potential Impact of Carbon Markets on North Carolina Forests". NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-11052009-234247/.
Testo completoAbstract (sommario):
Several studies have examined the theoretical aspects of determining the optimal carbon rotation. This paper explores the tradeoff between timber and net carbon sequestration in managing representative forest management types in North Carolina. Under conservative assumptions regarding the social benefits of carbon storage, optimal rotation periods are extended depending on the forest type, carbon price, interest rate, and emission penalty under consideration. Analysis shows when carbon price is low the extension of the joint timber-carbon rotation are similar among DOE, CCX, and VCS protocols; when carbon price is high, the joint rotation extends longer under DOE protocol than the other two protocols, especially in the lowland hardwood forest type. Results suggest that such joint strategies could be financially attractive. Sensitivity analysis is used to examine the effects of changes in financial parameters on landowner returns and optimal management. Under most assumptions, our findings indicate that including carbon sequestration in forest management increases returns but leads to only marginal changes in rotation length.
10
Wang, Fei. "Design and implementation of Web-based GIS for forest fragmentation analysis". Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2473.
Testo completoAbstract (sommario):
Thesis (M.A.)--West Virginia University, 2002.Title from document title page. Document formatted into pages; contains xi, 107 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 100-107).
11
Lovett, Jonathan C. "Classification and affinities of the Eastern Arc moist forests of Tanzania". Thesis, Bangor University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333691.
Testo completo
12
Morris, Tracy Catharine. "Tree Composition Along Edaphic and Hydrologic Gradients in Nonriverine Wet Hardwood Forests". NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-04102005-161445/.
Testo completoAbstract (sommario):
We sampled seven intact nonriverine wet hardwood forests to establish target ranges for vegetation, soils and hydrology and to examine trends in plant species composition along a wetness gradient. Although quantitative vegetation analysis for this community has been published, broad drainage classes were used to represent a moisture gradient. We investigated trends along a finer-scaled wetness gradient utilizing a novel wetness index that incorporated indicators of saturated soils. Understanding small-scale patterns in plant community composition is useful in planning wetland restoration projects. Although no strong relationship was found between wetness index classes and plant community composition, these data represent the vegetative community supported by soils specific to each wetness class. Absence of this relationship is most likely a result of the dominance of A. rubrum and L. styraciflua in all wetness classes as well as a history of disturbance in each forest and other unknown stochastic variables. For the restorationist hoping to restore a historic nonriverine wet hardwood forest, once known as oak flats, we can suggest guidelines for restoring hydrology to the wetness classes in which we found oaks with high importance.
13
Baucom, Deana L. "Armillaria species in the Missouri Ozarks forests". Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4306.
Testo completoAbstract (sommario):
Thesis (M.S.) University of Missouri-Columbia, 2005.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (May 18, 2007) Includes bibliographical references.
14
Predmore, Stephen Andrew. "Presettlement vegetation and fire in Escambia and Covington counties, Alabama". Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Summer/master's/PREDMORE_STEPHEN_32.pdf.
Testo completo
15
Folegatti, Bruno da Silveira Smidt Mathew F. "The use of mechanical thinning treatments in management of small stands at the wildland urban interface". Auburn, Ala, 2004. http://repo.lib.auburn.edu/EtdRoot/2004/FALL/Forestry_and_Wildlife_Sciences/Thesis/FOLEGATTI_BRUNO_23.pdf.
Testo completo
16
Rydberg, Dan. "Urban forestry in Sweden : silvicultural aspects focusing on young forests /". Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1998. http://epsilon.slu.se/avh/1998/91-576-5607-X.gif.
Testo completo
17
Hörnsten, Lisa. "Outdoor recreation in Swedish forests : implications for society and forestry /". Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2000. http://epsilon.slu.se/avh/2000/91-576-6053-0.pdf.
Testo completo
18
Hulting, Dustin J. "Regional patterns of presettlement forests in the Boston mountains of northwest Arkansas". Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4504.
Testo completoAbstract (sommario):
Thesis (M.A.)--University of Missouri-Columbia, 2006.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (February 8, 2007) Includes bibliographical references.
19
Pralle, Sarah Beth. "Conflict expansion and containment in forestry politics /". Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/10748.
Testo completo
20
Öhman, Karin. "Forest planning with consideration to spatial relationships /". Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-6082-4.fulltext.pdf.
Testo completo
21
Forsberg, Filip. "Naturum Vindelgransele : The Laws of the Forests". Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223550.
Testo completoAbstract (sommario):
This is a project about human relation to nature. How we have used the nature in our surroundings and created architecture that comes from the material access and practical needs of our daily lives and what I can do with this knowledge as an architect. It is a project striving to bring focus to the lost knowledge of forestry and history and skills of traditional woodcrafts. I asked myself, what can I learn from traditional building techniques to create architecture based on site specifcs and material logics? And how can architecture help us understand our surroundings and history?
22
Moore, Joseph G. "Two struggles into one? : Labour and environmental movement relations and the challenge to capitalist forestry in British Columbia, 1900-2000 /". *McMaster only, 2001.
Cerca il testo completo
23
Vieira, Ima Celia Guimaraes. "Forest succession after shifting cultivation in eastern Amazonia". Thesis, University of Stirling, 1996. http://hdl.handle.net/1893/26668.
Testo completoAbstract (sommario):
Succession following shifting cultivation was studied in secondary forests (5 to 40 years old) and a primary forest in Bragantina region, Para, Brazil. Secondary forests covered 62% of the study area (89 km² ) and crops and pasture 18%. Soil analyses showed an increase in pH, exchangeable calcium, magnesium and potassium and a decrease of organic matter and exchangeable aluminium, immediately after burning. Organic matter and extractable phosphorus increased with forest age, exchangeable aluminium and potassium were the same in both secondary and primary forests and exchangeable calcium and magnesium remained higher in the secondary forests. The highest densities of individuals and the least basal area and height were found in the younger secondary forests. The number of woody species (≥5 cm dbh) 250-m2 plot ranged from 8 to 17 in the secondary forests and 17 to 27 in the primary forest. Ordination and classification of floristic data suggested four successional communities. The forests regenerated readily and studies showed: the largest seed bank (0-5 cm) in the 5-years-old forest (1190 ± 284 seeds m-2) and a decrease with age to 137 ±19 seeds m-2 in the primary forest; the highest seed rain in the 5-years-old forest (883 ± 230 seeds m-2) and least in the primary forest (220 ± 80); 46% of the smaller plants (≥1 m tall, < 5 cm dbh) were seedlings and 54% were sprouts in the 5-years-old forest but in the 10-years and 20-years-old forests, seedlings (81%) predominated; adult plants (≥5 cm db h) in 5 to 20-years-old plots regenerated mainly from sprouts. Even after about 90 years of shifting cultivation the region has the potential for forest regeneration and the soil nutrients are able to recover to values similar to those in the primary forest. This raises the hope that, if a land use plan for Bragantina could be implemented, then it would be successful.
24
Boal, Clint William 1961. "Northern goshawk diets in ponderosa pine forests in northern Arizona". Thesis, The University of Arizona, 1993. http://hdl.handle.net/10150/278373.
Testo completoAbstract (sommario):
Little dietary information exists for northern goshawks (Accipiter gentilis) in the southwestern United States. I conducted 1,539 hours of direct observation at 20 active goshawk nests in ponderosa pine forests on the North Kaibab Ranger District, Arizona, 1990-1992. I recorded 385 prey deliveries at a mean delivery rate of 0.25/hr. I identified 63 deliveries to class, and 307 to genus or species. Golden-mantled ground squirrels (Spermophilus lateralis) and cottontail rabbits (Sylvilagus spp.) were the most common mammalian prey species (41%). Stellar's jays (Cyanocitta stelleri) and northern flickers (Colaptes auratus) were the most common avian prey species (16%). Mammals and birds accounted for 76 and 24% of the prey observed, and mammals accounted for 94% of the biomass used by northern goshawks. I compared the characterization of diet of northern goshawks based on direct observation to the characterization of diet based on prey remains. Diet based on prey remains differed from diet based on direct observation for individual prey species and the proportion of mammals and birds. Goshawk diet information based on prey remains should be interpreted cautiously. (Abstract shortened by UMI.)
25
Acharya, Uma. "Biodiversity conservation : perceptions and concepts in community forestry in Nepal /". Connect to thesis, 2004. http://eprints.unimelb.edu.au/archive/00001325.
Testo completo
26
Stevenson, Aaron P. "Effects of prescribed burning in Missouri Ozark upland forests". Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4931.
Testo completoAbstract (sommario):
Thesis (M.S.)--University of Missouri-Columbia, 2007.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 3, 2008) Includes bibliographical references.
27
Sundermeier, Mark Alan. "TOURISM IN EXURBAN POSTINDUSTRIAL FORESTS IN APPALACHIA". The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1292958854.
Testo completo
28
Folegatti, Bruno da Silveira Smidt Mathew F. "The application of precision forestry technologies in logging operations". Auburn, Ala., 2009. http://hdl.handle.net/10415/1975.
Testo completo
29
Banzhaf, George Maynard. "LOG GRADE VOLUME DISTRIBUTION MODEL FOR TREE SPECIES IN RED OAK-SWEETGUM FORESTS IN SOUTHERN BOTTOMLANDS". MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-06302009-110223/.
Testo completoAbstract (sommario):
Southern bottomland sites are among the most productive areas for producing high quality grade hardwood, yet the ability to estimate the quantity and quality of standing grade hardwood is almost non-existent. Measurements and observed log grades were recorded on standing trees to construct volume prediction models for individual trees. Several different modeling techniques were explored and compared during development. Developed equations predict merchantable sawtimber volume and volume by grade category in trees by species group. Two separate sets of equations were developed for each species group using either total height or merchantable height. Models were chosen based on significance of variables, index of fit, RMSE, bias, ease of use, and biological trends. The models developed to predict merchantable sawtimber and grade volumes were designed to be implemented in a larger hardwood growth and yield system.
30
Cassells, Gemma Fiona. "Can remote sensing be used to support sustainable forestry in Malawi?" Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/8050.
Testo completoAbstract (sommario):
Sustainable forest management is a key issue in Malawi. Malawi is a relatively small, resource poor, densely populated country, which in some areas is close to exceeding the energy capacity of the environment to support it. Despite the importance of forestry in Malawi, there is a severe lack of knowledge about the current state of Malawi’s forest resources. Remote sensing has the potential to provide current and historical insights into forest cover change. However, Malawi faces a number of key challenges with regards to in-country remote sensing. These include technical capacity for obtaining accurate and consistent forest area and biomass estimates, with errors at acceptable levels, as well as the necessary supporting capacity development for individuals and institutions. This thesis examines how remote sensing can be used to support sustainable forestry in Malawi, by assessing the use of both optical and Synthetic Aperture Radar (SAR) data for mapping forest cover, forest cover change and aboveground biomass (AGB). L-band SAR data was used to try and establish a relationship between radar backscatter and biomass, which has been achieved many times in other areas. However, no correlations between any field-based forest metric and backscatter explained enough of the variability in the datasets to be used to develop empirical relationships between the variables. There were also differences between my field measured AGB and AGB values predicted by a published backscatter-biomass relationship for African dry forests. The speckle inherent in SAR imagery, the heterogeneity of Malawi’s dominant miombo savanna, and Malawi’s variable topography are likely to have played a significant role in this. Two different MODIS products were investigated for their potential for mapping forest cover change, with regards to potential REDD+ schemes. As part of this, a published equation was used to calculate the break-even point for REDD+ schemes in Malawi, using estimates of forest area and deforestation for the United Nations Forest Resources Assessment 2010. The results of this equation show that measurement error is the most important factor in determining whether or not Malawi can make REDD+ economically viable, particularly at lower levels of deforestation. While neither of the MODIS products were able to produce a verifiable forest cover change map, they do confirm that Malawi is experiencing some level of forest loss, and help to narrow down the range of possible forest loss rates Malawi is experiencing to between 1-3% net forest loss per year. Finally, this thesis examines global trends in the engagement of developing country researchers with global academic remote sensing research, to investigate differences in in-country capacity for monitoring forests using remote sensing. The results of this found that while a significant proportion of Earth observation research (44%) has developing countries as their object of research, less than 3% of publications have authors working, or affiliated to, a developing country (excluding China, India and Brazil, which are not only countries in transition, but have well established EO capacity). These patterns appear consistent over the past 20 years, despite the increasing awareness of the importance of capacity development over this period. Despite inconclusive results from the approaches examined here, remote sensing can play a role in improving understanding about the dynamics of Malawi’s forest resources. There is a need for nationwide accurate, validated forest maps that can be repeated at least on a yearly basis, and remote sensing could produced these without the resources needed to conduct full national ground inventories each year. If remote sensing is to be useful as a forest mapping tool in Malawi, it needs to provide consistent, verifiable and updatable estimates of forest cover and biomass change. This ideally needs to be achieved using free or low cost data, and by using open source or open access software, as this will better enable incountry researchers to conduct on-going forest mapping activities.
31
Paine, C. E. Timothy. "Ecological factors affecting the diversity of tropical tree seedlings /". View online, 2007. http://etd.lsu.edu/docs/available/etd-06272007-084024/unrestricted/CETP_diss_2007_06_21.pdf.
Testo completoAbstract (sommario):
Thesis (Ph. D.)--Louisiana State University, Baton Rouge, 2007.Includes bibliographical references (p. 89-106). Also available via the World Wide Web: http://etd.lsu.edu/docs/available/etd-06272007-084024/unrestricted/CETP_diss_2007_06_21.pdf
32
Liz, João Paulo Czarnecki de. "Zoneamento de Risco de Incêndios Florestais na Reserva Biológica do Aguaí". Universidade do Estado de Santa Catarina, 2014. http://tede.udesc.br/handle/handle/1924.
Testo completoAbstract (sommario):
Made available in DSpace on 2016-12-12T20:12:28Z (GMT). No. of bitstreams: 1
PGEF14MA011.pdf: 2057019 bytes, checksum: 230c76c381dec0b6aa736817205d3552 (MD5)
Previous issue date: 2014-03-24Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The forest fire risk zoning (ZRIF) is a very important tool for the prevention, monitoring, planning, fire and definition of public policies regarding the maintenance of the ecological heritage. Fires risky to the environment, in addition according to their proportion it can be very difficult to control and combat. Then thinking in terms of monitoring and prevention arises need to develop methodologies to perform ZRIF of native forest reserves in the state of Santa Catarina, which is the main focus of this research. The study was conducted at Aguaí Biological Reserve which is located in the foothills of the Serra Geral in the southern state, with an elevation between 200 and 1400 meters and area of 7,672 ha. The study areas were divided into REBIO of Aguaí with 7,874 ha and the surrounding area with 18,441 ha. The study areas are home to the sources from which the rivers that supply the southern Santa Catarina region, directly affecting 450,000 people. The research sought to validate and improve techniques for ZRIF already applied by authors such as Oliveira (2000 ) , Koproski (2010 ), Nunes (2011 ) , Tetto (2007 ) among others , have developed models for weighting and weights assigned to different levels of information which is based on each factor that affects the occurrence of fire in a particular location ( human presence , prevailing wind , combustible material , slope , vegetation cover and exposure of slopes ) through map algebra technique performed using the software " ArcGIS 9.3 ". Aerial imagery of flight state of SC for construction of cartographic base, altimetry ASTER / GDEM data and BDMEP / INMET San Joaquin to determine the prevailing winds of the region station were used, in addition to mapping data from IBGE . The product of this research are maps with six classes of forest fire risk ; zero , low, moderate , high, very high and extreme. For the boundaries of the Aguaí REBIO presented respectively the proportions of 3.4% , 42.5 % , 19.7% , 20.6 % , 9.6% , and 4.2 % from the total area of the reserve ( 7874 ha ) and 14.2 % , 30.7 % , 19.8 % , 13.4% , 16.7% and 5.1 % for the surrounding area ( 18441 ha ) . The application of the ZRIF methodology to the area of REBIO and the surrounding area offers grant to improve the management of the reserve and the surroundings. The ZRIF offers the possibility of a more assertive planning prevention and monitoring related classes of high risk on the map . The methodologies adopted have proved satisfactory for the zoning of fire risk of the REBIO Aguai and surrounding area
O zoneamento de risco de incêndios florestais (ZRIF), é uma ferramenta importante para a prevenção, monitoramento, planejamento, combate a incêndios e definição de políticas públicas relativas à manutenção do patrimônio ecológico. Os incêndios oferecem risco ao meio ambiente, além disso de acordo com sua proporção podem se tornar muito difíceis de controlar e combater. Pensando então em termos de monitoramento e prevenção surge necessidade de se desenvolver metodologias para realizar o ZRIF de reservas de florestas nativas no estado de Santa Catarina, que é o enfoque principal desta pesquisa. O trabalho foi realizado na Reserva Biológica do Aguaí que está localizado nos contrafortes da Serra Geral no sul do estado, com altitude entre 200 e 1400 m e área de 7.672 ha. A áreas de estudo foram divididas em REBIO do Aguaí com 7.874 ha e área do entorno com 18.441 ha. As áreas de estudo abrigam as nascentes que dão origem aos rios que abastecem a região sul catarinense, influenciando diretamente 450.000 pessoas. A pesquisa procurou validar e aprimorar as técnicas de ZRIF já aplicadas por autores como Oliveira (2000), Koproski (2010), Nunes (2011), Tetto (2009) entre outros, que desenvolveram modelos de ponderação e pesos atribuídos a diferentes planos de informações que tem como base cada fator que afeta a ocorrência de incêndio em um determinado local (presença humana, vento predominante, material combustível, declividade, cobertura vegetal e orientação das encostas) por meio da técnica de álgebra de mapas realizada com uso do software "ArcGis 9.3". Foram utilizadas imagens aéreas do voo do estado de SC para construção da base cartográfica, dados altimétricos ASTER/GDEM e dados da estação BDMEP/INMET de São Joaquim para determinação dos ventos predominantes da região, além de dados de cartografia do IBGE. O produto do trabalho são mapas com seis classes de risco de incêndio florestal; nulo, baixo, moderado, alto, muito alto e extremo. Para os limites da REBIO do Aguaí apresentaram respectivamente as proporções de, 3,4%, 42,5%, 19,7%, 20,6%, 9,6%, e 4,2% em relação à área total da reserva (7874 ha) e 14,2%, 30,7%, 19,8%, 13,4%, 16,7% e 5,1% para a área do entorno (18441 ha) para as classes de risco nulo, baixo, moderado, alto, muito alto e extremo respectivamente. A aplicação da metodologia de ZRIF para a área da REBIO e para área do entorno oferece subsídio para a melhoria na gestão da reserva e do entorno. O ZRIF oferece a possibilidade de um planejamento mais assertivo de ações de prevenção e monitoramento relacionadas às classes de risco elevado presentes no mapa. As metodologias adotadas se mostraram satisfatórias para o zoneamento de risco de incêndio da REBIO do Aguaí e da área do entorno
33
Lootens, James. "Estimation of total height, growth, and mortality of forest trees in Missouri". Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4284.
Testo completoAbstract (sommario):
Thesis (M.S.)--University of Missouri-Columbia, 2005.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (Dec. 13, 2006). Vita. Includes bibliographical references.
34
Clark, James Joseph. "Multi-resolution stereo vision with application to the automated measurement of logs". Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25582.
Testo completoAbstract (sommario):
A serial multi-resolution stereo matching algorithm is presented that is based on the Marr-Poggio matcher (Marr and Poggio, 1979). It is shown that the Marr-Poggio feature disambiguation and in-range/out-of-range mechanisms are unreliable for non-constant disparity functions. It is proposed that a disparity function estimate reconstructed from the disparity samples at the lower resolution levels be used to disambiguate possible matches at the high resolutions. Also presented is a disparity scanning algorithm with a similar control structure, which is based on an algorithm recently proposed by Grimson (1985).
It is seen that the proposed algorithms will function reliably only if the disparity measurements are accurate and if the reconstruction process is accurate. The various sources of errors in the matching are analyzed in detail. Witkin's (Witkin, 1983) scale space is used as an analytic tool for describing a hitherto unreported form of disparity error, that caused by spatial filtering of the images with non-constant disparity functions.
The reconstruction process is analyzed in detail. Current methods for performing the reconstruction are reviewed. A new method for reconstructing functions from arbitrarily distributed samples based on applying coordinate transformations to the sampled function is presented. The error due to the reconstruction process is analyzed, and a general formula for the error as a function of the function spectra, sample distribution and reconstruction filter impulse response is derived.
Experimental studies are presented which show how the matching algorithms perform with surfaces of varying bandwidths, and with additive image noise.
It is proposed that matching of scale space feature maps can eliminate many of the problems that the Marr-Poggio type of matchers have. A method for matching scale space maps which operates in the domain of linear disparity functions is presented. This algorithm is used to experimentally verify the effect of spatial filtering on the disparity measurements for non-constant disparity functions.
It is shown that measurements can be made on the binocular scale space maps that give an independent estimate of the disparity gradient this leads to the concept of binocular diffrequency. It is shown that the diffrequency measurements are not affected by the spatial filtering effect for linear disparities. Experiments are described which show that the disparity gradient can be obtained by diffrequency measurement. An industrial application for stereo vision is described. The application is automated measurement of logs, or log scaling. A moment based method for estimating the log volume from the segmented two dimensional disparity map of the log scene is described. Experiments
are described which indicate that log volumes can be estimated to within 10%.Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
35
Gay, Michael Dewayne Best Troy L. "Effect of age of forest on mammals in the Upper Mobile-Tensaw River Delta, Alabama". Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/GAY_MICHAEL_46.pdf.
Testo completo
36
Rentch, James S. "Stand dynamics and disturbance history of five oak-dominated old-growth stands in the unglaciated Appalachian Plateau". Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2135.
Testo completoAbstract (sommario):
Thesis (Ph. D.)--West Virginia University, 2001.Title from document title page. Document formatted into pages; contains xi, 227 p. : ill. (some col.), maps. Includes abstract. Includes bibliographical references.
37
Onprom, Surin. "People, Forests and Narratives: the Politics of the Community Forestry Movement in Thailand". Thesis, The University of Sydney, 2012. http://hdl.handle.net/2123/8962.
Testo completoAbstract (sommario):
The conflict associated with the rights of local people with regard to forests and forest resources in Thailand may be traced back to the nineteenth century. It became the subject of hot political debate at the national level in the early 1990s. The national debate surrounding the passing of the Community Forest Bill between the early 1990s and 2007 involved various political actors who held different assumptions, beliefs and knowledge regarding the relationships between people and the forest environment. In the debate, these political actors produced, distributed and used various storylines about people, forests and their relationships in order to legitimise, justify and position their political claims regarding people and forest relationships. This thesis starts with the premise that the community forestry movement cannot be separated from the storytelling of and about local people and forests. It aims to understand the politics of forestry decentralisation in general, and the politics of the community forestry movement in particular. The thesis seeks to examine the use of people and forest narratives in the context of the long debate on the Community Forest Bill. It also examines the interplays between national and local narratives about people and the forests. In particular, it looks at how local lives, landscapes and the relationships between them have been shaped by the ways in which actors employ narratives. The thesis involved narrative analysis and ethnography. Written and oral narratives about people and forests at the national and local level were obtained and analysed. Four broad narrative themes were identified at the national level. Adding to written narratives on national level narratives, seventeen key informants including policy makers, academia, policy advocates and forest officers were interviewed. At the local level ethnographies of two forest communities were conducted where interviews, participant observation and the “walk and talk” technique were employed to examine the local narratives responding to the national narratives. The thesis found that actors’ policy narratives about people and forests are multiple and diverse. The multiple narratives mirrored the multiple views, assumptions and knowledge of political actors toward the relationships between people and the forests. The storytellers deliberately assigned meanings to people, forests and their relationships by employing different terms and language. They strategically simplified stories for political reasons to mobilize political support or to destabilize policymaking assumptions. The storytellers tended to talk only about convenient issues and to deliberately hide the controversial ones. The local narratives were also diverse. In the context of resource contestations and conflicts, local people actively both produced their storylines responding to national narratives and adopted available narratives to their practices in particular the resource management practices. Although the narrative strategies helped local people to reclaim and renegotiate their rights over resources, those adopted narratives in turn became “narrative traps”, since they omitted important rights including the rights to farm and the right to harvest timber.
38
Bowling, Ernest H. "A stand level multi-species growth model for Appalachian hardwoods". Thesis, Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/104295.
Testo completo
39
Buckingham, Kathleen. "The marginalisation of an orphan species : examining bamboo's fit within international forestry institutions". Thesis, University of Oxford, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.669868.
Testo completoAbstract (sommario):
This thesis presents an examination of the interplay between bamboo and institutions of resource management in China, India and internationally, highlighting the need for greater diversity and scope of Western dominated forestry institutions and associated mechanisms. Firstly, the thesis aims to explore the conceptual understanding of forests and the exclusion of bamboo from this construction. The key reason this question is important is that it changes the 'technological zones‘ of forestry. Growing resource scarcity has meant that bamboo is now an increasingly important input in the global forest products marketplace. Secondly, the thesis aims to examine how governance mechanisms and actors respond to the inclusion of this new input. The thesis adopts the 'paper route'; the first paper traces the socio-historical reasons why bamboo‘s potential is yet to be realised, particularly within international policy. It considers the challenges of forestry being predominantly conceptualised as treed lands and the implications for the limited efficacy of sustainable forestry, carbon and trade instruments when applied to bamboo. The second paper acts as an introduction to Western produced forest certification devices, focusing on their transformation within forestry institutions and perceived legitimacy within China. The third paper focuses on a case study of bamboo certification in India. The final paper analyses the controversy regarding the efficacy of forest certification for bamboo globally. The thesis aims to explore these topics through three lines of theory. First, it contributes to institutional framing theory by examining where the idea of a 'forest' originated from and the consequences this has had for the rise of bamboo as a 'timber' product. Second, the thesis aims to further legitimacy theory in two key ways, by examining how the Chinese government accommodates and facilitates the differing needs of both international and domestic markets, whilst ultimately assuming a legitimate form of (institutionalised) domestic governance, and how the perceived input (procedure) and output (efficacy) legitimacy influence the potential success of current and future forest certification for bamboo. Third, the thesis seeks to provide a dynamic analysis of the role of certification through the lens of performativity, which uncovers how certification can create different realities for different actors. This thesis is timely and important for a number of reasons. Firstly, China is gaining more prominence on the world stage, both as an economic and political power. With increased pressure on forestry resources, the forestry administration is determined to upscale sustainable forest management. This requires adhering to global notions of sustainability thorough market mechanisms and ensuring a degree of autonomy of forest management through localising processes. Secondly, China recently received Forest Stewardship Council (FSC) bamboo certification for some of the most intensively managed areas in the country. This has increased controversy amongst experts regarding the efficacy of the mechanism to truly bring about sustainable bamboo management. Thirdly, on a more global scale, one of the crucial issues with up-scaling bamboo management is the fact that there are over 1,200 species of bamboo, with three different rooting structures: monopodial (diffuse) sympodial (clumping), and amphodial (mixed) – which have distinct policy and management needs. Focusing purely on the large-scale, intensively managed, monopodial or treelike' stands in China would ignore the vast areas of small-scale, sympodial bamboo homesteads with issues regarding flowering and propagation of sterile species. Bamboo plantations in Africa, Latin America, and India are being developed, which require enabling policy and management mechanisms. With a global industry estimated at US$10bn, the implications of an inclusive and enabling frame for bamboo management could have wide ranging impacts for both natural resource management and livelihood development.
40
Motaung, Tsholofelo. "Review of forest plantation funding in South Africa". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97471.
Testo completoAbstract (sommario):
Thesis (MDF)--Stellenbosch University, 2015.ENGLISH ABSTRACT: Developing sustainable forests has been acknowledged to be important, not just as a way of averting deforestation and land degradation, but as another opportunity to contribute positively towards rural development, especially in sub-Saharan Africa. Forestry development has, however, not received the recognition it deserves. Its importance to economic development and its potential contribution have not been explicitly communicated and thus remain undervalued. The long rotations required for trees to mature, plus the associated risk from fires, pests and diseases has affected the sector’s ability to attract investment. In South Africa this reluctance is evident in both the public and private sectors alike. Access to finance for forestry remains a challenge, which negatively affects the supply to the processing part of the value chain. The objective of the study is to review current forestry funding mechanisms in South Africa, specifically plantations and their contributions to rural economic development. Using secondary data, the study reviewed the current sector funding from the state, development funding institutions and the private sector. The study also looked at alternative sources used in other countries and how they can be customised to the South African economy. In this study it was found that there are gaps between policies aimed at the development of the sector on the one hand, and the resources allocated to the sector on the other hand. The available schemes fail to support the sector policies’ objectives. These discrepancies can be attributed to the poor design of the current offering, the development of which failed to fully consider the dynamics of the sector. The conclusion of the study was that the government needs to play more of a leading role in developing the sector, especially with the small-scale growers who cannot be catered for by both commercial and development banks. The sector also stands to benefit significantly from better collaboration between the public and private sectors. Policies that create an enabling environment would also encourage the private sector to invest more. The study also suggested that, in view of the dynamics of the sector and its contribution to climate change risk mitigation, there is room to tap innovative funding such as that offered by environmental funding.
41
Newmann, Sarah McCarthy. "Plant-soil feedbacks in temperate and tropical forests". Diss., Connect to online resource - MSU authorized users, 2008.
Cerca il testo completoAbstract (sommario):
Thesis (Ph.D.)--Michigan State University. Dept. of Forestry Program in Ecology, Evolutionary Biology and Behavior, 2008.Title from PDF t.p. (viewed on July 13, 2009) Includes bibliographical references (p. 170-184). Also issued in print.
42
Pacurari, Doru I. "Evaluation of the use of remotely sensed images to speciate mixed Appalachian forests". Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1550.
Testo completoAbstract (sommario):
Thesis (M.S.)--West Virginia University, 2000.Title from document title page. Document formatted into pages; contains x, 128 p. : ill. (some col.), maps (some col.) Vita. Includes abstract. Includes bibliographical references (p. 116-121).
43
Wienk, Cody Lee. "Restoring ponderosa pine forests in the Black Hills, South Dakota". Thesis, The University of Arizona, 2001. http://hdl.handle.net/10150/278759.
Testo completoAbstract (sommario):
Ponderosa pine (Pinus ponderosa Laws.) forests have changed considerably during the past century, partly because recurrent fires have been absent for a century or more. In dense stands of ponderosa pine in the Black Hills of South Dakota, a layer of pine needles has replaced understory vegetation. I examined the disturbance history, soil seed bank, and effects of prescribed burning and overstory reduction on understory vegetation in a ponderosa pine stand in the northern Black Hills. Cessation of fires, prolific ponderosa pine regeneration, and logging led to a dense, even-aged stand with very little understory vegetation and few viable seeds in the soil seed bank. Understory vegetation did not respond to restoration treatments the first growing season, but did respond the second growing season. Paucity of viable seeds in the soil seed bank does not appear to constrain recruitment of understory vegetation in dense ponderosa pine forests of South Dakota.
44
Hasegawa, Hisashi. "Reorganization of Site Management Unit for Precision Forestry in Mountainous Temperate Forests". Kyoto University, 2001. http://hdl.handle.net/2433/150360.
Testo completo
45
Lincoln, Philippa R. "Stalled gaps or rapid recovery the influence of damage on post-logging forest dynamics and carbon balance /". Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2008. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=24813.
Testo completo
46
Manokaran, N. "Population dynamics of tropical forest trees". Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 1988. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59678.
Testo completo
47
Emtage, Nicholas F. "An investigation of the social and economic factors affecting the development of small-scale forestry by rural households in Leyte Province, Philippines /". [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18311.pdf.
Testo completo
48
Lindemuth, Robert M. "A Field Trial Comparison of Sampling Methods for Estimating Basal Area and Volume in Partially Harvested Stands in Maine". Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/LindemuthRM2007.pdf.
Testo completo
49
Lavoie, Manon. "Caractérisation de la phase de sénescence chez l'épinette noire (picea mariana (Mill.) B.S.P.) à partir de l'accroissement annuel en volume de la tige /". Thèse, Chicoutimi : Université du Québec à Chicoutimi, 2001. http://theses.uqac.ca.
Testo completo
50
Baral, Jagadish Chandra. "Government intervention and local processes in community forestry in the hills of Nepal /". Richmond, N.S.W. : University of Western Sydney, Hawkesbury, 1999. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030522.085631/index.html.
Testo completo